Exerciser



FIG. 1 is a front elevational view of an exerciser showing my newdesign;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof shown on an enlarged scale; and

FIG. 5 is a bottom plan view thereof.

The ornamental design for an exerciser, as shown and described.